In the previous chapter, you learned some of the basics of the object-oriented paradigm, including classes and objects, which are also known as instances. We started working on an app required by an acrylic paint manufacturer that wanted to take full advantage of the popularity of a popular YouTuber, painter, and craftswoman. We ended up creating a UML diagram with the structure of many classes, including their hierarchy, properties, and methods. It is time to take advantage of the Playground to start coding the classes and work with them.
In Swift, a class is always the type and blueprint. The object is the working instance of the class, and one or more variables can hold a reference to an instance. An object is an instance of the class, and the variables can be of a specific type (that is, a class) and hold objects of the specific blueprint that we generated when declaring the class.
It is very important to mention some of the differences...
